SU687003A1 - Device for manufacturing superposed rolling glass - Google Patents

Description

(54) DEVICE FOR MANUFACTURING SUPPLY ROLLED GLASS

The purpose of the invention is to improve the quality of glass by stabilizing the current / ocin of the overlay.

This is achieved by the fact that, in a device for manufacturing surface-mounted rolling glass, containing a drain tray of glass melting pits, a rolling machine and a feeder of a laid-out glass mass with a slit-hole in the bottom and heaters, installed above the drain tray, the heaters are set offset from the axis of the feeder in the direction of the rolling machine equal to 3-25% of the feeder width. In addition, the heaters are installed with the possibility of vertical and horizontal movement from the drive.

 FIG. 1 shows the device, a general view; in fig. 2 - feeder, longitudinal section; in fig. 3 - the same cross section.

A device for producing rolled rolled glass contains a feeder 1 mounted above the drain pan 2 of a glass melting furnace 3 for cooking the main glass melt 4.

A feeder 1 is placed in front of the rolling machine 5 equipped with forming rolls 6. A rolling strip of glass 7 with guide 8 and roll table 9 is fed to the annealing furnace.

Feeder 1 has a drain hole 10, heaters 11 are installed above the container. They are located inside the consignment glass 12 at a distance S from the axis of the feeder. Heaters can be electric, gas or others. They can be performed, for example, in the form of a pipe of heat-resistant material, inside which are nichrome or carborundum electric heaters. It is advisable to make heaters sectional, Jagrean sections 13 and 14, located at the end walls of the feeder, more than section 15, located in the center.

The heaters are equipped with temperature sensors connected to the regulators and ensuring automatic control of switching them on depending on the temperature of the glass melt (not shown).

To move the heaters, serve as gigs 16, rigidly connected to the heaters 11 and installed in the guides 17 with the possibility of vertical and horizontal adjustable movement in the hole 18 when using the bolts 19,

Other options are possible for relocating the heaters, a screwdriver with screws, a chain drive, etc., moving the heaters can be carried out both manually and mechanically.

The device works as follows.

Over a Lottox and 2 glass melting furnace 3, a feeder 1 is installed with dimensions of 1200x800xhbOO mm, having a drain slit hole 10 with an average width of 4 mm in the bottom of the heater. measured by thermocouple. The distance between the heaters varies between 5-300 mm, the distance from the lower heater to the drain hole is regulated within 0-200 mm, the distance from the axis of the heaters to the feeder wall facing the rolling mill is 260 mm, and to the opposite wall - 300 mm.

The composition of the glass melt of the main layer is as follows, wt%: SiO2, 71.9 Ae2031.0, FejO, 0.1; CaO 10.0 MgO 4.0; Na2O 13.

The composition of the consignment glass is as follows, wt.% 5 SiOj 67.5 4.0; ZnO 14.0; CaO 1.0; 2, 0; Na, Oll, 5.

Glass rolling speed - 120 m / h; Consumption of glass mass 60 kg / h, the temperature of the main glass mass 1040s, temperature of glass mass 980s.

Under these conditions, a red rolled glass was obtained.

Placing heaters in the feeder directly inside the glass overlay and moving them allows you to create and maintain the optimum temperature of the adhesive glass mass at any layer height and flow rate. When uniform, the temperature distribution over the entire width of the glass ribbon is maintained. Moving the heaters makes it possible to regulate the flow rate of the consignment note, and, consequently, the thickness of the overlay layer at any rental speed. Using the displacement of the heaters, it is possible to completely or partially block the drain hole of the feeder with them, adjusting the temperature and flow rate of the laid-on glass melt without changing the whole feeder.

The asymmetrical arrangement of the heaters relative to the vertical axis of the feeder allows equalizing the temperature of the applied glass mass, which

5 also contributes to the isothermal flow of glass overlay. An isothermal glass melt can be increased by using sectional heaters, there is a large section density located at the end walls of the feeder. These features ensure the stable operation of the device and the production of high quality rolled glass.

The proposed device makes it easy to change the composition of the consignment note.

glass, which gives BSMOZHNOST to produce rolling glass with different properties on one furnace without any essential elements in the technological process.

According to preliminary calculations, the cost of colored rolled glass produced using the proposed device is 20-80% lower than rolling glass obtained by other methods.

With the release of 1 million m of rolled glass on the proposed device, an economic effect of 0.8-1.2 million rubles can be obtained.

Claims (3)

Invention Formula 1, Apparatus for producing surface rolling glass, comprising a drain pan of a glass melting furnace, a rolling machine and a feeder of a consignment glass mass with a slit hole in the bottom and heaters mounted above the drain pan, characterized in that the glass is improved by stabilization the thickness of the overlay, the heaters are set offset from the axis of the feeder in the direction of the rolling machine, equal to 3-25% of the width of the feeder. 2. The device according to claim 1, characterized in that the heaters are installed with the possibility of vertical and horizontal movement from the drive. Sources of information taken into account in the examination 1. The patent of Germany 1.002.922, cl. 32a 13/00, published. 1955. 2.Patent UK  1074620, class With 1 M, pub. 1965. 3. Published in France W 2.101.077-, cl. From 03 to 13/00, published 1972. „L9 J6 IS